/* CirKit: A circuit toolkit
 * Copyright (C) 2009-2015  University of Bremen
 * Copyright (C) 2015-2017  EPFL
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "unateness.hpp"

#include <classical/utils/aig_utils.hpp>

namespace cirkit
{

/******************************************************************************
 * Public functions                                                           *
 ******************************************************************************/

unate_kind get_unateness_kind( const boost::dynamic_bitset<>& u, unsigned po, unsigned pi, unsigned num_pis )
{
  const auto pos = po * ( num_pis << 1u ) + ( pi << 1u );

  return u[pos] ? ( u[pos + 1u] ? unate_kind::independent : unate_kind::unate_neg ) : ( u[pos + 1u] ? unate_kind::unate_pos : unate_kind::binate );
}

unate_kind get_unateness_kind( const boost::dynamic_bitset<>& u, unsigned po, unsigned pi, const aig_graph_info& info )
{
  return get_unateness_kind( u, po, pi, info.inputs.size() );
}

unate_kind get_unateness_kind( const boost::dynamic_bitset<>& u, unsigned po, unsigned pi, const aig_graph& aig )
{
  return get_unateness_kind( u, po, pi, aig_info( aig ) );
}

}

// Local Variables:
// c-basic-offset: 2
// eval: (c-set-offset 'substatement-open 0)
// eval: (c-set-offset 'innamespace 0)
// End:
